Compensating device for oil-pump counters, etc.



Patented Jan. 27, 1925.

' UNITED ,STATES 1,524,601 PATENT OFFICE.`

CURTIS HUSSEYVEEDER, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE MANUFACTURING COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATI F CONNECTICUT.

COMPENSATING DEVICE FOR OIL-PUMP COUNTERS, ETC.

Application led December 11, 1923. Serial No. 679,919.c

To all whom it may cmwem:

Be it known that I, CURTIS i Hussnr VEEDER, a citizen of the United States, residingf in Hartford, in the State of Con- I necticut, have invented certain new and useful Improvements in Compensating Devices for Oil-Pump Counters, etc., of which the following is a specification, reference being had to the accompanying drawings, formin a part hereof.

n an application of Harold J. Williams, tiled concurrently herewith and assigned to the assignee herein, there are'shown and described compensating devices for oil pump counters, etc., designed with a view to meeting' the present-day requirements, particularly of gasoline filling stations. The devices described in said application mark a substantial advance over the prior art in that the compensation is made proportional to the. length of the stroke o the pump, whereas in rior devices intended for the same genera purpose, while it was possible to make fairly accurate compensation for a complete stroke of the pump, it was not possible for a partial stroke. The devices described in said application, however, prove, when subjected to av test of actual operation, to be open to the objection lthat by reason of the backlash or lost motion in the compensating devices it is possible to milk the pump, that is, to operate the pump through short strokes, suii'icient to deliver gasoline in small quantity, without 8l actuating the counter. It has therefore been the object generally vin view in the present invention, -to produce compensating devices which, while operating upon the v same general principle as that embodied in 40 the devices describedin said application, that is to say, devices in which the driven member is actuated from the driver through a' helical motion, represented by the inclined side "of the driving slot, the possibility of backlash or lost motionin the compensating devices shall be avoided, and the objection above mentioned overcome. TheI advantage of accurate compensation for l partial strokes is retained through the provision of a. helical slot as one feature of the improved compensating device for cooperation with the co-acting element and -variationjwof Athe compensating devices to suit ldiyz''rent Aconditions of' use 1s made possible through the provision of a series of such helical slots of different angular relation. The invention will be explained more fully hereinafter with reference to the vaccompanying drawing in which it is illustrated and in which- Figure l is a view partly in elevation and partly in longitudinal section showing a-portion of a pump mechanism, a counter, and the transmitting and compensating devices between the two.

Figures 2 and 3 are views in transverse section on the planes indicated respectively by the broken lines, 2 2 and 3 3, looking in the direction 'of the arrows.

Figure 4 is a detail view, partly in secltion,'showing particularly the adjusting disc in its relation to the casing.

Figures 5 and 6 are face views of the two compensating, slotted discs.

Figure 7 is a face view of the adjusting disc with the spiral slot.

In the embodiment of the invention illus- ."lrated in the drawings a portion of the pump mechanism, receiving a rotary oscillating movement, from the operations of the pump, is indicated at a and is shown as having connected therewith a pinion a which, through reducing gears a2 and a3, drives a gear a* which is mounted loosely on a central shaft. m. The reduction is such that the rotation of the gear a4 does not exceed at any time a complete rotation. The hub a5 of the gear a4 or a sleeve secured -thereto, mounted in a` transverse plate y of the casing y has secured thereto, on the opposite side of the plate y, a disc b which may be regarded as the driver of the compensating devices, partaking, as it does, of

themovement of the pump mechanismand moving, with a rotary oscillating movement, through an angle which is determined always by the extent of movement of the l pump mechanism, whether it be a full stroke or a partial stroke. The disc b, shown in face view in Figures 3 and 5, is formed with a series of slots b', b2, b3, I1* and b5. All of the slots are of uniform width. The slot b is preferably truly radial and the slots b, b, b* and b are rogressively inclined, as clearly shown in igure 5.

Adjacent to the disc b, but mounted independently thereofis a disc c, shown in '05, which are of so that the disc o it also receives,

face view in Figure 6, which may be regarded as the driven member of the compensating devices. This disc is also provided with a series of slots c', c2," c3, c4 and uniform width and are progressively inclined, as clearly shown in Figure 6. The angle of inclination of each ofthe slots Z22, b3, etc., is preferably measured', as5to successive slots of the series, by a multiple of the angular displacement of angle of displacement of the slots 02, 03, etc., is preferably a multiple of the unit angular displacement ot' the slot c2, which is preferably a -delinite portion of the unit angu-lar displacement of the slots ofthe disc b. In operation the two discs are coupled by a pin (l which engages two co-operatingslots of the two discs and the relation of the two series of slots of the two discs, as described abovepermits great nicety of compensation to be attained within the-maximum provided for.

ln the operation of the compensating devices the pin (l, which couples the two dises is driven from the dise Z), must have, during its rotary oscillating movement, caused by the rotary oscillating movement of the disc b, a movement from and toward the axis of rotation ofthe two discs.` Accordingly it is supported by a plate e which is slotted, as at e', to straddle4 the central shaft The other end of the pin is received in a helical slot f of a disc f which is supported concentrically with the discs o and c, the slotted disc being strengthened by an unslotted disc f2. Normally, in the operation of the compensating devices, the disc f is stationary, being clamped between the casing members f/ and 2/2 by the casing bolts ,i/S. The edges of the dises f and f2 project beyond the casing members, as shown`in Figures 1, 2 and 3, and may be knurled so that, when the eas ing bolts y are slightly backed oil", the disc f can ybe adjusted to determine the initial position of the pin (l, which is carried away from or toward the axis of the discs b, c, through its engagement with the spiral slot f. In the operation of the compensating devices, however, the disc f is held in fixed position so that as the pin d receives from the disc 7) a rotary oscillating movement; by reason of its engagement with the spiral slot f', a movement away from and toward the axis. As the driven disc o is operatively connected to the counting mechanism, as will be described, the extent of movement of vthe counting mechanism will therefore be determined by the movement of the pin (Z and 'the movement of the pin d will be determined selectively by ,its engagement with the slots of the dises l) and c in co-operation with the spiral slot f of the dise f. Not only, therefore, can the compensating devices be adjusted to suitthe delivery of the tion with which they are used, but the compensation, by reason of the radial movement of the coupling pin, is progressive and proportional to the length of stroke of the pump.

As stated above, the driven disc o is operatively connected with the counting mechanism. ln the construction shown, lthe dise o is secured to a sleeve g supported loosely on the central shaft the sleeve g actuating, through a clutch g, preferably of the ball friction type, the shaft ai itself by which the counter, sutliciently shown at' 7L, is driven. A retaining clutch (/2, which is preferably of the same character, is provided for the purpose of preventing backward movement of the shaft The proper adjustment of the ing devices for each pump will of course be madein the Shop. The actual delivery ot the pump having been determined, the two discs o and c will be combined and coupled by the engagement of the pin l in such slots of the two discs as are determined by selection as securing movement of the counting mechanism in proportion to theymeasured delivery of the pump. Ordinarly the disc f will be left free fonmoveinent until the proper compensation has been determined, so as to avoid breakage, and will then be compensatparticular pump in connec held from further movement by setting up on the casing bolts.

It will be understood that changes in detail of construction and arrangement will be made` to suit different conditipns of use and that the invention, except as pointed ont nin the claims, is not limited to the particular construction and arrangen'ient shown and described herein.

l claim as my invention:

l. The combination of a. counting mechaniszn, a substantially radiallyvslotted disc having Val rotary oscillating movement, a pin engaging said disc and having a rotary oscillating movement, means to aetuate one of the two last namedelements with a rotaryoscillating movement, and means to actuate the counting mechanism from the other of said elements.

Q. The combination of a counting mechanism, a substantially-,radially slotted disc having' a rotary oscillating movement, a ipin engaging said disc and having a rotary oscillating movement. means to actuate one of the two last named elements with a rotary oscillating movement, means to actuate they counting mechanism from the other of said elements, and means to move the pin radially with respect v to the disc.

3. The combination of a counting mechanisin, a disc formed with a substantially radial curved slot and having a rotary oscillating movement, a pin engaging said' disc andhaving a rotary oscillating movement, means to actuate one of the last two named elements with a rotary Oscillating movement, and means to actuate the counting mechanism from the other of seid elements.

4. The combination of a counting mechanism, a disc lformed with a series of substanti'allyy radial slots of different curvature and having a rotary oscillating movement, a pin engaging one or another of said slots and having a rotary oscillating movement. means to'actuate one of -the two last -named elements with a rotary oscillating. n1ovement, and means to actuatc the counting mechanism from the other of said elements. y

5. The combination of a counting mechanism, a disc formed with a series of substantially radial slots of different curvature and having a rotary oscillating movement, a pin engaging one or another of said slots and having a rotary oscillating movement, means to actuate one of the two last named elements with a rotary oscillating movement, means to actuate the counting mechanism from the other of said elements, and means to move the pin radially with respect to the disc.

G. The combination of a counting mechanisni, a substantially radially slotted disc having a rotary oscillating movement, a pin engaging said disc and having a Arotary oscillating movement, a movable carrier for said pin, a relatively fixed, spirally slotted plate engaged by the pin, `and means to actuate `the counting mechanism through the movement of the pin.

7. The combination-of a counting mechanism, a substantially radially slot-ted disc driven with a rotary oscillating movement, a second substantially radially slot-ted disc in operative relation with the counting mechanism and having a rotary oscillating movement, and a pin in engagement with slots of both discs to couple the same operatively.

8. The combination of a counting mechanism, a substantially radially slotted disc driven with a' rotary oscillating movement, a second substantially radially slotted disc in operative relation with the counting mechanism, a pin in engagement with slots of both discs to couple the same operatively, and means to move the pin radially with respect to the slots during the rotary oscillating movement thereof.

9. The combination of a counting mecha,- nism, a. substantially radially slotted disc driven with a rotary oscillating movement, a second substantially radially slotted disc in operative relation with the counting mechanism, a pin in engagement with slots of both discs to couple the same operatively, and a plate formed with a spiral slot for engagement with said pin to move the same radially with respect to'the slots of the disc during the rotary oscillating movement thereof. 4

l0. The combination of a counting mechanism, a rotary oscillating disc in operative relation with the drivingelement and having a single` substantially radial slot, a

'second disc mounted concentrically with the first and having also a single radial slot, means to actuate the counting mechanism from the second disc, a coupling pin in engagement with the slots of the two discs, a carrier for said pin, and a third d isc having a helical slot in engagement With the coupling pin to guide the same in its movements, said thirddisc being rctatable'to determine the radial position of the coupling pin in the slots of the first and second discs'. This specification signed this 8th day of December, A. D. 1923.

CURTISHSSEY VEEDER. 

